Battery pack



FIG. 1 is a front view of our new design for a battery pack;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a top perspective view thereof; and,

FIG. 8 is a bottom perspective view thereof.

The broken lines in the drawings are for the purpose of illustrating portions of the battery pack that form no part of the claimed design. 

CLAIM The ornamental design for a battery pack, as shown and described. 